Why isn't the video card I just installed in my computer not working right?

I have an older computer and I just tried putting in a video card I had sitting around. It is a NVIDIA GeForce4 Ti 4200 with AGP8x. It is in my computer right now, but I am having some problems. There will be random blue and red color dots/lines appearing, especially when I scroll on pages. It doesn't cover the whole screen, but they are scattered. Would this have anything to do with the fact that I have the card installed in a AGP4x slot when it is AGP8x or is it something else? I updated the drivers and that didn't help. It does work when the hardware acceleration is turned off. Any help?|||did you update the drivers at the NVIDIA website|||did you uninstall the old drivers first???



if you have an integrated GPU then you need to disable it in the BIOS and set to boot and run from the AGP slot and you need to make sure that you hooked up any power plugs and that the power supply is powerful enough to run the system and the GPU. more than likely the GPU itself is bad...



EDIT



alright your issues are the old drivers and the BIOS. i use ATI cards but the process is pretty much the same. I dont believe that you need to have the new card installed before installing the new drivers but if you do...



first. take the card out and do a system restore.

delete the old video drivers in Add/Remove Programs.

shut down

Install the card and hook up any power connectors

reboot and go into the BIOS, usually the Del key. I dont know your system, but in there some where should be a setting for VGA primary and it will probably say On Board, change it to AGP or add on or what ever the setting says.

F10 and reboot.

If you need to have the card in install the drivers now. DO NOT go through the New Hardware Detected wizard.

REBOOT